Wheel structure.



A.' B. DAY.

WHEEL STRUCTURE. APPLICATION FILED AUG. 14, 1913.

Patented Sept. 8, 191.4.

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WHEEL STRUCTURE. v, APPLICATION FILED wem; 1913.

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lo'Th ALFRED BRYANT jY, 0F. KNQXVILLE, TENNESSEE WHEEL STRUCTURE.

Specication of Letters Patent.

Patented Sept. 8, 1914.' serial No. 784,805.

Application tiled August le, 1918.

To all whom it may concern:

Be it. known that I, citizen of the United States, residin at Knoxville,in the county of Knox and tate of Tennessee, and useful Improvements inWheel Structures, of which Athe' following is a specica tion, referenceb eing had therein to thea@ companying drawing.

is invention relatesto an improvement in wheel l'structures adapted foruse .in con cars wherein the axles ection'with A .are 'usually fixed .tothe car body and the wheel members rotate onl the ends ofthe axles.

They invention .may be. stated to be moref .speciicallyan improvement onthe 'class of wheels illustrated and described in the patentto A. BLlDay'hlo. 907750 of December 29, 1908,. and patent .issued to Hugh WSanford on JulyQ, 1912, No. 1031590.

p .Thenbjcct of the present invention'is te simplify 'the structuresdescribed in these above mentioned patents to produce a wheel which willhave' a minimum number of' parts; one wherein the use of fbrous pachingor end washers .are avoided `between thehub and pedestal or bodyportion; one wherein'a relatively thin vlubricant may be employedwithout escapingfrom the bear' ing; one which eliminates wearA on theinner wheel hub and pedestal box, and one wherein the roller members maybe readily .assembled in the hub part of the wheel and there retainedafter the wheel has been removed from the axle.

' the line 2-2 of Fig. l; Fig.

A convenient embodiment of the invention is shown in the accompanyingdrawings, as well as a modified form thereof, but itis to be understoodthat various changes canvbe made and employed in lieuof features shownwithout departing from the nature and principle of the invention.

In the drawing: Figure l is a longitudinal vertical section takenthrough the wheel box or' hub and showing the wheel in elevation; Fig. 2is a cross section on 3 is a modified form; Fig. 4 is an end view of aspacing ring for the rollers,l and Fig. 5 is a slightly modified form ofspacing ring.

A designates the axle, conveniently cylindrical of preferably ALFRED B.DAY,

have invented 'certain new A more particularly body of the car, 'B theAOrming av shoulder as at b against which a collar b is placed on theaxle.

fC.. designates the pedestal box `having a .shank portion C' throughwhich the axle greater diameterfthan the end portion,

passes, the .end thereof abutting the collar The louter end of thepedestal on lthe axle. box is 'ormed enlarged and though not necessary,the same conveniently has two diameters, the smaller or innermostdiameterlbe'ing designated C2, and the outer C3 forming a shoulder ctherebetween. This said portion of the pedestal box is convenientlysymmetrical onV its inner face, the verticaly wall c extending to thebore thereof, while the outer flanged portion of thebox extendssufficiently forward or outward to constitute a housing for the innerend of the hub, presently tobe described.

D l designates the wheel hub, conveniently' cast 1n 'a single piecehaving its forward, end closed by, the integral end partD formed with acentral abutting part for the end of theaxle, and an annular recess d.The diameter of the central abutting part of the `endor cap portion D isslightly greater than the end of the diameter of the axle, as ShowninFig.l 1. The bore of the hub i's conveniently uniform throu houtand it.has on its inner face a lining 2 of the usual construction. Adjacentthe inner end of the hub on the periphery thereof, is anenlargement .orshoulder part DE. while inwardly of the shoulder and spaced therefrom isa shoulder part D4, a channel d4 between the two shoulders. The'diameterof the shoulders D, D* is greater than the smaller diameter of .theinterior of the pedestal` box and slightly less than the diameter of theouter portion Cs of the pedestal box thereby forming a somewhatrestricted passageway -between the inner walls of the edestal box andthe outer surface of the yinner end of the hub part. The hub is conf.the vertical wall 0',

`veniently spaced from and the shoulder part C of the pedestal box byvextending the axle portion until its end engages the endwall Dpreventing the hub from moving'back on the axle to a point where the endof thel hub will be inengagement with the pedestal box. The collars b(there being one on each'end of the axle) serve to maintainthe axleagainst movement and thereby the space.

being formed of the hub, thus vlo between the hub and maintainedsubstantiallyA nnrisrin during service. .lt may be stated that anadvantage of this construction is that oi avoiding wearing contactbetween the larger areas oi the box and hub at the inner end of thelatter.

lvlounted within the inner end of the bore of the hub is a metallic ringE, the same being riveted conveniently and closely fitted to the innerend of the hub. rl`his ring projects inwardlyto a point in close orsubstanti ally contact relation with the axle. Projecting inwardly 'fromthe inside edge of the ring E is a lip e 'forming in substance anannular recess e between the wall of the hub and the said lip,corresponding in that particular somewhat to the annular recess d at theouter end oi the hub,

l? designates a series of rollers arranged around the end of the axle,each being provided with central studs The length of the rollers is lessthan the'distance between the projecting part ci' the barrier and theinwardly extending portion of the end cap, while the studs f extendoutwardly from the ends or" the rollers toa distance suliicient to carrythe same below or beyond the lprojecting part e of the bar-- rier andbeyond the inwardly extending part or wall of the end cap. The studs onthe rollers being located within the annular channels or spaces e andal, serve to retain the rollers in the hubwhen the axle is removed.

.Endwise movement of thel rollers F in one direction is provided by theend thereof 'engaging the inner surface of the enlarged portion ot thecap and movement in an opposite direction may be limited bythe stud fengaging the member E or by the end of the roller engaging the part e asdesired.

ln some instances it may be found desirablefto' interpose between thethrust bearing part atthe center of the end disk D a wear plate G, thesame being maintained in its position by having its edge portions dishedoutwardly at g in a manner to permit the studs on the ends of therollers to occupy their proper position in the recess d. This wearingwasher however may be omitted `in some cases.

To retain the hub in its position against outward movement relative tothe pedestal box, keys l-l are employed, the same passing throughsuitable seats or apertures in the walls oi the pedestal box and'through the spaces Z4 of the hub These keys are of a thickness less thanthe space d4, but are designed to rt against the vertical part oi theflange Dt.

have 'found it convenient to :torni these keys substan Alily rectangularin cross section, prefera'n square so that a large wearing surfaceiguished from the l in 'aie aforementioned pa at their ends.

the p= lestal box is f l l l lgrease on the y rioaeor;

lil designates a threaded plug fitted into an oil opening leadingthrough the wall ot the hub into the roller recess al.

l represents the wheel spokes and 2 the rim.

By maintaining substantially the relative position ot the hub andpedestal box as shown, whereby a tortuous space is formed between thesame, it has been ascertained that the usc of felt suoli as shown in myabove mentioned patent can be avoided and in lieu thereoi a heavynon-fluid grease emplayed. This grease can be packed into the space andwill maintain its position largely by virtue of the character oil thepassageway or space, thus excluding all sand, grit or dust7 while at thesame time 'forming a lubricant betweenuthe parts. The grease thusindicated or referred to is shown in the drawing and it has beenascertained to be successful as a packing as well as a lubricant forthis point, thus avoiding the large area contacting and wearing surfaceas suggestcdV in vmy Jormerpatent. By forming the barrier at the innerend of the hub a thin lubricant can be employed in connection with thebearing proper and will be maintained in the wheel and in a properposition with reference to the rollers.` However, in practice it ispreferred to use a thick bearing as well as for the pack` ing. Thisthick vgrease is forced into the hearing with a screw pressure greasegun. The old -dirtyfgrease is thus forced out of the wheel into thepedestal as a packing and fresh grease is put on the bearing thusautomatically repacking thev pedestal 'at each greasingfof the wheel.

By this construction it will bel seen that cage rings or spacing ringsare avoided' and that when the hub is removed.r the rollers will stillmaintain their position in the hub. lt will be understood, however, inconnection with the construction just described, that spacing ringswithout longitudinal ribs (as in ordinary roller cages) may be employedas shown in Figs. 3 and 4 of the' drawing.

ln the. modilication of the construction shownv in Figs. 3 and ll, therollers L have their ends positioned in spacing rings L', the pintles orlstuds at the ends of the rollers entering circular openings in therings in a well known manner. The rollers are maintained in position' inthis particular 'form oi structure bya cup shaped member M riveted tothe inner end of the hub having its innermost portion bent into a pointadjacent the surface of the axle. rlfhis member lil takes the place ofthe barrier E hcretoiore described when referring to the otherstructure. ln this construction the spacing rings will maintain therollers in their proper position against `falling out from the hub whenthe axle is remored while the rollers, as shown 1n Fig.

barrier prevents the removal of the rollers l in "an endwise direction.v i' n lieu of the circular perforations or bearings for the studs atthe ends of the 4, an oblong open ended slot Z may be employed in thespacing rings, :1s shown in Fig. 5. 1

One of the 'material advantages and bene-A fits derived fromthejconstruction and arrangement of the bearings is that when in use,the ends ofthe rollers or inner .spacing rings are held against' movinginto contact with the stationary part or pedestal, differing in thisparticular from the construction shown 'in thev aforementioned Patent No. 907,750. Inasmuch as lthe pedestal box is stationary and the rollersare prevented' from 4coming into Contact therein, all wearing tendencybetween the rollers and the pedestal is avoided.

An additional advantage may be stated to be that of preventing therollers or. theirv spacing rings from coming into contact with the fixedpart which would tend to cause improper rotation of the rollers. Thecon` rollers to operate at substantially the same rate of speed, and alltendency to move the'rollers out of improper parallelism is largelyr`avoided.

From the above it will be ascertained readily that the wheel is oneembodying Ya mini-. mum number of parts, can be readily assem- .bled andone which maintains its lubricant without objectionable waste.

Having thus described the invention, what is elaimed'is:-

l. Ina wheel structure and in combination, a cylindrical axle part, a'pedestal having a recessed outer 'end portion, a hub sleeved on theaxle, .a barrler member xedly secured within the inner end of the hub,rollers within the hub, and means for retaining the rollers within thehub when the axle is removed.-

'2. In a car and body, a cylindrical axle member, a pedestal the axle issecured and tween the portions, a hub loosely mounted nn the end of theaxle with its inner ends separated from the pedestal member by anunobstructed space, and having a projecting rib part at said inner endspaced from said shouldered portion and from the pedestal i hub, and

described.

3. In a wheel structure and in combination a pedestal member having arecessedouter portion of different diameters formed with a shoulderedportion therebetween, a hub part having a shoulder on its periphery said. anti-friction in combination with a yhub being separated from v.with apedestal box,

adjacent its inner end and litted in said pedesta-l portion, means -onthe pedestal portion for maintaining' the hub against outward movement,and an axle member having a cylindrical end entering the hub andvsecuredto said pedestal portion, substantially as described.

4. In a wheel structureand in combinav tion a pedestal having a'recessedouter end portion an axle, a hub sleeved on 'the axle and having an endpositioned within a ter` minal recess of 'the pedestal, said hub alsohaving an integral end cap portion constituting an end thrust bearingfor the axle and formed with an annular recess adjacent cap, a barrierremovably secured at the opposite end of the hub and having an inwardlyprojecting part, and a series of roll` ershaving end studs locatedrespectively within said recess and spaced between the inwardlyprojecting part of the barrier and the hub.

5. In a wheel structure, the combination with a pedestal member having arecessed outer portion a cylindrical axle projecting from the pedestal,of a hub member sleeved upon the axle Jand positioned within the recessof the pedestal, said hub member having a closed outer end formed withan annularl recess on its inner wall, of 'a barrierfmember having alongitudinally projecting inner portion secured to the inner end ofthe-hub, and

rollers in the hub having projectlng portions entering-.between theIongitudinal portion of the barrier and the hub and in the said annularrecesses respec- 100 tively.

6. In a wheel structure and in combination a pedestal box and 'axlesecured therein,

a liub member having its ends projecting into the pedestal box andformed of a single 105 casting, the end wall of which constitutes an endthrust4 bearing for the axle, a series of anti-friction rollers in thehub, a barrier riveted to the inner end of the hub and enh` bracing theaxle, and means for r etaininv the anti-friction rollers in the hub, thesaid Y the pedestal by an unobstructed space. v

In a wheel structure, the combination and a hub membenof an axle, an endthrust bearing at the endv ofv the hub, spaced annular flangesprojecting outwardly beyond the periphery of the hub, one of saidlianges substantially closing the space between the open end of thepedestal 1'20 boxand the hub, the side walls of the other of saidflanges providing an elongated vertical engaging surface, and a pin ofrectanguar cross lsection secured to the pedestal box and having a flatside arranged toengage the vertical surface of said flange, and the saidpin lying within the plane of said ianges. 8. In'a wheel structure andin combinae tion an axle having a cylindrical part, a

pedestal member having a portion to receive the .end of a hub, a hubmember hav ing .a closed outer end, means ior maintaining the inner endof theA hub in' the pedestal box but out of contact therewith at allpoints whereby the space therebetween is unobstructed, and a lubricatingpacking subn stantially filling the space between the pedestal box andthe end o'l the hub.

9. ln a Wheel construction, the combination of a pedestalmember having arecess the Wall of the recess being conform intermediate its ends an anaxle proiecting at its side, structed to annular shoulder, through thepedestal, sleeved positioned Within the recess of the pedestal., and anannular rib positioned in the space formed by said shoulder of therecess, the said hub and rib being separated from the adjacent Wall ofthe pedestal by an unob lstructed' space, a lubricant packingsubstantially' filling said space, the hub having an inward proiectionat its inner end separated from the vertical Wall of the receivingrecess of the pedestal, and a lubricant packing entirely filling thespace between said inward projection of the` hub and the vertical wall othe pedestal recess, said lubricant being indirect contact with the huband said pedestal..

Gopes of this patent may be .obtained for five cents each,

a hub for the axleK `upon the axle and haring an end i,ice,ecs

10. ln a Wheel construction, the combination ci a pedestal member havingd.recess at its side, the Wall of the recess being constructed to formintermediate its ends an shoulder, an axle pro1ecting the pedestal, ahub member for the axle sleeved upon the aXle and having an endpositioned With-in the recess oi the pedestal, and an annular ribpositioned in the space formed by said shoulder of the recess, the saidhub and rib being separated from the adjacent W all of the pedestal byan unobstructed space, a lubricant packing substantially'lling saidspace, the hub having an inward projection at its end forming' anabutment for Athe end of the axle, la barrier member arranged Within thehub and positioned on the axleior 'closing the opposite end of the hubmember, roller bearings nterposed between the axle and the hub member,and bearings on the end projection oY the hub member' and saidloarriermember for retaining the rollers in place when' the axle isremoved. l

ln testimony whereof l affix my -signature in presence of two Witnesses.

ALFRED BRYANT DAY.

Vitnesses E. R. Tarma, J. FRANK Dinner.

annular 4tlirou gh by addressing the Commissioner of Patents,

Washington, l). C.

